Mini fan



FIG. 1 is a perspective view of a mini fan showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a back view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines shown in the drawings depict portions of the mini fan in which the design is embodied that form no part of the claimed design. 

CLAIM The ornamental design for a mini fan, as shown and described. 